DTC P1745: Problem in Shift Control System; Servo Control Valve Stuck OFF

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).

Warm up the engine to normal operating temperature (the radiator fan comes on).
Make sure that the transmission is filled to the proper level, and check for fluid leaks.
Drain the ATF (see step 4 on ATF REPLACEMENT ) through a strainer. Inspect the strainer for metal debris or excessive clutch material.
Does the strainer have metal debris or excessive clutch material?

YES -Replace the transmission, then go to step 10.

NO -Replace the ATF (see step 7 on ATF REPLACEMENT ), then go to step 4.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears at speeds over 5 mph (8 km/h), do not release the accelerator during the test-drive.
Turn the ignition switch to LOCK (0). Repeat the test-drive in step 6, then go to step 8.
Monitor the OBD STATUS for P1745 in the DTCs MENU with the HDS.
Does the screen indicate FAILED?

YES -Repair the servo control valve in the main valve body (see MAIN VALVE BODY DISASSEMBLY, INSPECTION, AND REASSEMBLY ), servo valve in the regulator valve body (see REGULATOR VALVE BODY DISASSEMBLY, INSPECTION, AND REASSEMBLY ), or replace the main valve body, the regulator valve body, or replace the transmission, then go to step 9.

NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen indicates NOT COMPLETED, go to step 4.
Clear the DTC with the HDS.
Test-drive the vehicle with the shift lever in D, and let the transmission shift through all five gears at speeds over 5 mph (8 km/h), do not release the accelerator during the test-drive.
Turn the ignition switch to LOCK (0). Repeat the test-drive in step 10, then go to step 12.
Monitor the OBD STATUS for P1745 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?

YES -Troubleshooting is complete.

NO -If the screen indicates FAILED, go to step 9 and recheck. If the screen indicates NOT COMPLETED, go to step 10.